Angles & LinesATI TEAS 7 cheat sheet

Naming and measuring

7 key facts Reviewed Oct 2026

Practice questions Save in app

The 1-minute sheetCinnaEntry

Angle Types

Acute < 90° · right = 90° · obtuse 90–180° · straight = 180°

Pairs

Complementary add to 90°
Supplementary add to 180°
Vertical angles are equal

Parallel Lines

A transversal makes corresponding and alternate angles equal
Co-interior angles are supplementary

Triangle Sum

The three angles of a triangle add to 180°

Key takeaway

Naming and measuring

CinnaEntry app: the study feed with a practice question

Study Angles & Lines in the appTEAS 7 and HESI A2 question banks with a rationale on every answer and timed practice tests.See how CinnaEntry works

Start free

Want more TEAS Mathematics questions?We'll email you a free set on Angles & Lines. No account needed.

Was this helpful?

Free to start

Know angles & lines cold

TEAS 7 and HESI A2 question banks with a rationale on every answer and timed practice tests.

TEAS 7 & HESI A2 question banks
Rationale on every answer
Timed full-length practice tests
300+ cheat sheets

Start free on the web Download on theApp Store Get it onGoogle Play

See how CinnaEntry works